Continuous manufacture of organic isocyanates

Details Continuous manufacture of organic isocyanates Continuous manufacture of organic isocyanates

1977-05-17

1978-12-05

Torrence, Dolph H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C11802

Patent

active

041285697

ABSTRACT:
A process for the continuous manufacture of organic monoisocyanates, diisocyanates and/or polyisocyanates from the corresponding organic amines and phosgene in the presence of inert organic solvents, with recycling of the reaction mixture, wherein the streams of liquid, consisting of the recycle stream and the amine feed solution, are fed to the reaction mixture at a rate such that an energy dissipation density of from 5 to 1,000 kJoule per m.sup.3 of recycled reaction mixture plus amine feed solution is generated in the mixing and reaction zone.

REFERENCES:
patent: 2822373 (1958-02-01), Beck
patent: 3781320 (1973-12-01), Irwin
patent: 3829458 (1974-08-01), Horn et al.

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